With this launch, combined with the existing 0.6 MW rooftop solar plant, the Pocharam campus will be one of the first corporate campuses in India to be run completely by renewable energy, Infosys said in a statement.

The plant, with a total capacity of 7.2 MW, has been synchronised with the grid and is expected to generate 12 million kWh per annum, it added.

The initiative is expected to reduce Infosys' Co2 emissions by 9,200 tonnes.

The Infosys IT SEZ at Pocharam is spread over 450 acres and under phase I, it has 16,000 seats. The construction of Phase II is underway with a planned capacity of 25,000 people.

Currently, Infosys has installed 12 MW solar power plants (on site) across its campuses and another 3 MW is expected to be completed within the next two months.

At the end of fiscal 2015, Infosys had reduced its perm capita consumption of electricity by 46 percent. Also, about 30 percent of its energy requirements are now being met through renewable sources.